Re: fix TCP roundtrip time update code

From: James Morris (
Date: Tue Jun 03 2003 - 19:24:14 EST

On Tue, 3 Jun 2003, David Mosberger wrote:

> Martin> I tested this patch and it looks like it has cured my
> Martin> mysterious TCP stalls.
> Yes, this sounds reasonable. I wasn't very clear on this point, but
> "by going south" I meant that TCP is starting to misbehave. In
> particular, you'll likely end up with the kernel aborting ESTABLISHED
> TCP connections with extreme prejudice (and in violation of the TCP
> protocol), because it thought that it had been unable to communicate
> with the remote end for a _very_ long time. The net effect typically
> is that you end up with one end having a connection that's in the
> ESTABLISHED state and the other end having no trace of that
> connection.


This might be the solution to one of the 'must-fix' bugs for the
networking, which nobody so far was quite able to track down.

- James

James Morris

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